Richard montgomery



RICHARD MONTGOMERY,' yOF NEWr YORK, N. Y. Lettere Patent LVO. 63,07*?,dated March 19, 1867.

IMPROVEMENT IN GUEVED GOEEGATED STEEL PLATES AS AN' ARTICLE 0EMANUFAGTURE.

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TO ALL WHOM IT MA1T CONCERN:

Be it known that I, RICHARD MONTGOMERY, of the city, county, and Stateof New York, have invented a certain new, useful, and' improved articleof manufacture from which tolconstruct Furnaces, Steam Chimneys, andFlues for Steam Boilers; and I do hereby declare that the following is aclear, full, and exact description thereof, reference being had tothenceompany'ing drawings, forming a part of this specification, inwhichlFigure l represents a plan view of a horizontal flue nade from myimproved article of manufacture.

Figure 2-representsa section on line AB, iig. 1,' looking'in thedirection of arrow 1.

Figure 3 represents an end view of iig. 1,'1ooking in the direction ofarrow 2, fig. 1t and Figure 4 represents an end View of part of afurnace.

` In the application and use of the inventionpatented to me on the 29thday of October, A. D. 1850, it has been found that many o'f thedifficulties which wcrezbefore met with in the construction of steamboilers have been obviated; still, in the use of corrugated iron lues.for steam-boiler furnaces and steam chimneys there have been greatdiliculties resulting from scales vforming on the iron, and many planshave been resorted'to to obviate the same; such plans, for instance, asthe application of various chemical compounds to the interior of theboiler, and' also galvani'zing the saine. All of these plans are,however, attended with muchexpense and inCOI1- venicnce. To obviatethese and other objections which have been found to exist, led me tomake a series of costly experiments, which resulted in the presentinvention'. l

In'thc production of myimproved article of manufacture,'stee1 issubjected to such pressure asis suicient to roll it (when properlyheated) into thin sheets, after which it is pressed through corrugatedandl'sweieping rolls, whereby -it is corrugatedand properly curved, asshown in the drawings. When it is to be used in the construction` 0ftubular ilues, as shown in figs. 1, 2, and 3, the edges are rivetedtogether, as shown in'igs. 2 and 3;"and when used for furnaces, as shownin iig. 4, the edges may be fastened to base-pieces in any propermanner'.

Some of the advantages resulting from `nay present invention will now bestated: First. Scales are not so liable to form, in consequence of thehard and smooth surface of the steel as compared with iron. Second. Thelues are not so liableto be injured and destroyed by the action of there, sincemuch thinner sheets can be used without at all affecting thestrcngth'of the dues than if they were composed of iron. Now, as thinsheetsA of metal transmit heatv much quicker than` thick ones, theinterior of the dues is not liable to be exposed Ato overheating. Third.More steam will be generated With-the same amount of fuel than in thecase of iron ues of the same strength, since theheated Igases are not so1in-ble to pass through the dues without generating steam in consequenceof the sensitive nature of the thin steel plates. Fourth. The weight ofthe material is reduced nearly one-fourth, and that, too, while thestrength and durability are increased.'v Fifth. The material beingproperly' curved as well as corrugated, can be manufactured and put intothe market all ready for use either in the construction of new iues orthe repair of yold ones, thus obviatin'g the delay which might resultfrom a necessity of corrugating and curving the material for anyvparticular case.

Having described my invention, what 1 claim as new, and desire to secureby Letters Patent as an improveda'rticle ofmanufaeture, is-

'Curved corrugated steel for the construction of steam chimneys, furnaceand fines for steam bolers,and for other purposes, substantially asdescribed.

In Witness whereof I have hereunto subscribed my name.

' ARICHARD MONTGOMERY.

Witnesses H. C. WIDDIcoiuBn, WM. YORKE AT Lun.

